Losh: Difference between revisions
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==Definition | ==Definition== | ||
# The three criteria necessary in order to violate the biblical prohibition of Losh are: | # The three criteria necessary in order to violate the biblical prohibition of Losh are: | ||
## there is a mixture of two ingredients, | ## there is a mixture of two ingredients, | ||
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# [[Kneading]] flour and water is a violation of the biblical prohibition of Losh ([[kneading]]).<ref> As is evident from gemara [[Shabbat]] (18a), mixing flour and water is a violation of Losh (Menuchat Ahava 9:1). Chut HaSheni ([[Shabbat]] vol 1 pg 105) defines Losh as the prohibition to mix two ingredients using a liquid to form a dough. </ref> | # [[Kneading]] flour and water is a violation of the biblical prohibition of Losh ([[kneading]]).<ref> As is evident from gemara [[Shabbat]] (18a), mixing flour and water is a violation of Losh (Menuchat Ahava 9:1). Chut HaSheni ([[Shabbat]] vol 1 pg 105) defines Losh as the prohibition to mix two ingredients using a liquid to form a dough. </ref> | ||
===Combining the | ===Combining the Ingredients=== | ||
# Just as it is forbidden to knead two ingredients together so too it is forbidden to pour one onto the other so that they will mix automatically. Therefore it is forbidden to pour water onto flour or flour onto water on [[Shabbat]]. <ref> In Gemara [[Shabbat]] (18a) there is a dispute whether one is liable for violating Losh by simply pouring liquid into flour or only if one both pours in the water and mixes it. The majority of the Rishonim (Rif, Rambam, Rosh, Ramban, and Ran, cited by Shaar haTziyun 321:57) hold that one isn't biblically liable until one has both poured in water and mixed it into dough (Mishna Brurah 321:50), nonetheless, Mishna Brurah 321:57 (quoting the Magen Avraham) there is a rabbinic prohibition even for just pouring liquid into flour or the opposite. This is also the ruling of Shemirat [[Shabbat]] KeHilchata 8:5, 39 Melachos (by Rabbi Ribiat, vol 1, pg 531), and Menuchat Ahava 9:1. </ref> | # Just as it is forbidden to knead two ingredients together so too it is forbidden to pour one onto the other so that they will mix automatically. Therefore it is forbidden to pour water onto flour or flour onto water on [[Shabbat]]. <ref> In Gemara [[Shabbat]] (18a) there is a dispute whether one is liable for violating Losh by simply pouring liquid into flour or only if one both pours in the water and mixes it. The majority of the Rishonim (Rif, Rambam, Rosh, Ramban, and Ran, cited by Shaar haTziyun 321:57) hold that one isn't biblically liable until one has both poured in water and mixed it into dough (Mishna Brurah 321:50), nonetheless, Mishna Brurah 321:57 (quoting the Magen Avraham) there is a rabbinic prohibition even for just pouring liquid into flour or the opposite. This is also the ruling of Shemirat [[Shabbat]] KeHilchata 8:5, 39 Melachos (by Rabbi Ribiat, vol 1, pg 531), and Menuchat Ahava 9:1. </ref> | ||
===''Bar Gibul''=== | |||
===Bar Gibul=== | |||
# There is a distinction between something which is bar gibul, meaning mixed easily and something which is lav bar gibul which doesn't mix easily. <ref> The gemara Shabos 155b distinguishes between what is known as a '''Bar Gibul''' as opposed to a '''Lav Bar Gibul'''. The basic distinction between the two is that a bar gibul is something which mixes easily upon addition of liquid, such as fine powder, flour, or sand, while a lav bar gibul is something that does not. <br /> | # There is a distinction between something which is bar gibul, meaning mixed easily and something which is lav bar gibul which doesn't mix easily. <ref> The gemara Shabos 155b distinguishes between what is known as a '''Bar Gibul''' as opposed to a '''Lav Bar Gibul'''. The basic distinction between the two is that a bar gibul is something which mixes easily upon addition of liquid, such as fine powder, flour, or sand, while a lav bar gibul is something that does not. <br /> | ||
* However, within the very definition of a lav bar gibul, there is a machlokes as to what its halachic status is. Rambam Shabbos 8:16 suggests that because these substances, such as ash or coarse sand never truly fuse with the substance it is being mixed with even when water is added and kneading is done, it is therefore not subject to the melacha altogether. Nonetheless, the Rambam (Shabbos 21:34) writes that would be a rabbinic concern of appearing as lishah. Mishnah Brurah 321:50 quotes this.<br /> Most poskim (Tosfos, Rosh, Rashba, Raavad, and Ran cited by Shaar hatziyun 321:60) however, understand that a lav bar gibul is still subject to the melacha of losh, and therefore in certain circumstances may be dealt with in an even more stringent manner than a bar gibul material, for it would be culpable simply upon addition of water, without any kneading, considering that the kneading does not accomplish anything of significance.</ref> | * However, within the very definition of a lav bar gibul, there is a machlokes as to what its halachic status is. Rambam Shabbos 8:16 suggests that because these substances, such as ash or coarse sand never truly fuse with the substance it is being mixed with even when water is added and kneading is done, it is therefore not subject to the melacha altogether. Nonetheless, the Rambam (Shabbos 21:34) writes that would be a rabbinic concern of appearing as lishah. Mishnah Brurah 321:50 quotes this.<br /> Most poskim (Tosfos, Rosh, Rashba, Raavad, and Ran cited by Shaar hatziyun 321:60) however, understand that a lav bar gibul is still subject to the melacha of losh, and therefore in certain circumstances may be dealt with in an even more stringent manner than a bar gibul material, for it would be culpable simply upon addition of water, without any kneading, considering that the kneading does not accomplish anything of significance.</ref> | ||
==A mixture which was mixed before Shabbat== | ==A mixture which was mixed before Shabbat== | ||
